121111130102020 has 192 divisors, whose sum is σ = 262489248000000. Its totient is φ = 46923295334400.

The previous prime is 121111130101961. The next prime is 121111130102029. The reversal of 121111130102020 is 20201031111121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121111130101985 and 121111130102003.

It is not an unprimeable number, because it can be changed into a prime (121111130102029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40383836481 + ... + 40383839479.

It is an arithmetic number, because the mean of its divisors is an integer number (1367131500000).

Almost surely, 2^{121111130102020} is an apocalyptic number.

121111130102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111130102020 is an abundant number, since it is smaller than the sum of its proper divisors (141378117897980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121111130102020 is a wasteful number, since it uses less digits than its factorization.

121111130102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318 (or 5316 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121111130102020 its reverse (20201031111121), we get a palindrome (141312161213141).

The spelling of 121111130102020 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred thirty million, one hundred two thousand, twenty".